For the past four years the warmest, as measured

the Year 2018 is the fourth warmest year that has been measured, the average global temperature was about 1 degree, (with a margin of error of plus/minus 0,13 degrees) above the average temperature from pre-industrial times, the end of the 1800s. It notes WMO after analyzing data from five leading international bodies.

The three years that have been warmer 2015, 2016 and 2017, it means that the last four years are the warmest that has been measured.

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so far has been measured, then contributed a strong El Niño, a weather phenomenon that sometimes pops up and leads to higher temperatures over large parts of the earth.

– The long-term temperaturtrenden is far more important than the ranking of individual years, and the trend is uppåtstigande, " says Petteri Taalas, secretary-general of WMO in a press release.

" The twenty hottest years measured have occurred in the past twenty-two years. The year 2018 is the fourth warmest year that has been measured, according to WMO. A clear sign of an ongoing change in the climate.

– Emissions of greenhouse gases and adaptation to climate change should be a top priority globally, " says Petteri Taalas, secretary general of the WMO.

occurred during the 2018: the Summer was rekordvarm in the northern hemisphere, here in Sweden it led among other things to a range of temperaturrekord, severe drought and forest fires. In a forest fire outside of Athens and killed many people, torrential rain in Majorca led to several deaths.

The indian state of Kerala was hit by the worst floods since the 1920s, and 1.4 million people had to leave their home. Western Japan was hit by major flooding, at least 230 people were killed and thousands had to leave their home. Eastern Australia has been hit by severe droughts, particularly New South Wales and southern Queensland, in large parts of the region where precipitation is less than half of the normal.

Both Japan and south Korea set a new heat record by 41.1 and 41 degrees.

2018 hit California by several large forest fires, which was renamed Camp Fire was the deadliest in over a hundred years in the united states. Photo: Josh Edelson/AFP

several large forest fires, which was renamed Camp Fire was the deadliest in over a hundred years in the united states.

the Prevalence of sea ice in the Arctic was far below the average in 2018, with record low levels during January and February.

– the Temperature is only one side of the matter. The extreme weather affected many countries and millions of people, with devastating consequences for economies and ecosystems in 2018, " says Petteri Taalas.

– Many of the extreme väderhändelserna is in line with what we can expect in a changing climate. We must realize that it is a reality. Emissions of greenhouse gases and adaptation to climate change should be a top priority globally.

in the similar way when it comes to extreme weather events. Australia experienced the hottest January on record, with heat waves, unprecedented both in temperature and length. Tasmania had the driest January on record, and devastating forest fires. According to the Australian meteorological institutes, it has been a long-term upward trend of extreme brandväder and the length of the brandsäsongen.

According to the WMO has intense heat waves become more common as a result of climate change.

in the southern hemisphere stood in perfect contrast to the extreme cold that swept over north America in January.

– Cold weather in the eastern united states contradicts certainly not climate change. In the Arctic year warming twice as fast as it is globally. Large parts of the ice in the region has melted. It affects weather patterns in the northern hemisphere outside the arctic region. Part of the cold anomalies at southern latitudes may be linked to the dramatic changes in the Arctic, " says Petteri Taalas.

"It's happening at the poles does not stop at the poles affects the weather and climate conditions at lower latitudes where hundreds of millions of people live," he says.